CVE-2009-2692
The MITRE CVE dictionary describes this issue as:
The Linux kernel 2.6.0 through 2.6.30.4, and 2.4.4 through 2.4.37.4, does not initialize all function pointers for socket operations in proto_ops structures, which allows local users to trigger a NULL pointer dereference and gain privileges by using mmap to map page zero, placing arbitrary code on this page, and then invoking an unavailable operation, as demonstrated by the sendpage operation (sock_sendpage function) on a PF_PPPOX socket.
Find out more about CVE-2009-2692 from the MITRE CVE dictionary dictionary and NIST NVD.
Statement
Red Hat is aware of this issue. Please see http://kbase.redhat.com/faq/docs/DOC-18065.
Updates for Red Hat Enterprise Linux 3, 4, 5, and Red Hat Enterprise MRG to correct this issue are available: https://rhn.redhat.com/cve/CVE-2009-2692.html
CVSS v2 metrics
| Base Score | 7.2 |
|---|---|
| Base Metrics | AV:L/AC:L/Au:N/C:C/I:C/A:C |
| Access Vector | Local |
| Access Complexity | Low |
| Authentication | None |
| Confidentiality Impact | Complete |
| Integrity Impact | Complete |
| Availability Impact | Complete |
Find out more about Red Hat support for the Common Vulnerability Scoring System (CVSS).
Red Hat Security Errata
| Platform | Errata | Release Date |
|---|---|---|
| MRG Grid for RHEL 5 Server (kernel-rt) | RHSA-2009:1239 | 2009-09-01 |
| Red Hat Enterprise Linux 4 (kernel) | RHSA-2009:1223 | 2009-08-24 |
| Red Hat Enterprise Linux Extended Update Support 4.7 (kernel) | RHSA-2009:1469 | 2009-09-30 |
| Red Hat Enterprise Linux EUS (v. 5.2 server) (kernel) | RHSA-2009:1457 | 2009-09-22 |
| Red Hat Enterprise Linux 5 (kernel) | RHSA-2009:1222 | 2009-08-24 |
| Red Hat Enterprise Linux 3 (kernel) | RHSA-2009:1233 | 2009-08-27 |
Acknowledgements
Red Hat would like to thank Tavis Ormandy and Julien Tinnes of the Google Security Team for responsibly reporting this flaw.CVE description copyright © 2017, The MITRE Corporation